Henry VI, Part II, Act IV, Scene II

Officials at an elementary school south of Boston have
banned kids from playing tag, touch football and any
other unsupervised chase game during recess for fear
they'll get hurt and hold the school liable.

But maybe it's not just the lawyers:

Another Willett parent, Celeste D'Elia, said her son feels safer because of the rule. "I've witnessed enough near collisions," she said.